WIN32:Crypt-DAG [Trj]

Anyone have or know where I can find a detailed description of threat WIN32:Crypt-DAG [Trj] that Avast is reporting?

It came up after scanning a tar file I created and copied from an old Centos Linux PC. The tar file is simply a mysql database. I believe it is a false positive and doubtful untar on Windows 7 could infect but checking to be sure. thx

Program Version: 2015.10.2.2215
Definitions Ver: 12041709-0

upload and test the file at www.virustotal.com if tested before, click rescan
you may post link to scan result here

avast dont have a online description, so use VT scan result to see what other name it and search there database for info